ANÁLISE DA CONTRIBUIÇÃO DOS ÍNDICES DA METODOLOGIA OVERALL EQUIPMENT EFFECTIVENESS (OEE) NO PROCESSO DE INJEÇÃO EM UMA INDÚSTRIA DE TERMOPLÁSTICO.

Abstract

The competitiveness of companies in the global market has increased more and more over the years, this intensification causes competitive pressure, which directs companies to reduce waste and increase productivity and consequently reduce their costs in an attempt to increase their profit margins. The present work aims to analyze the contribution of the indices of the Overall Equipment Effectiveness (OEE) methodology in the injection process in a thermoplastic industry to identify from the data and information generated, prepare a proposal to improve management. A descriptive-exploratory case study was developed in a company in the field of household plastic utensils in the market for more than 15 years. This encompasses several processes of the thermoplastic production chain, from the process of receiving the material, through separation and grinding, later going through the extrusion, going to injection and then shipping and logistics. The injection process was the object of study of this research, considered the determining step in the molding of products, being manufactured products in 11 injectors of high standard and performance. Data were collected through documentary research and participant observation for one year of research, being treated quantitatively by measuring the rates of availability, efficiency and quality for determination of the OEE. To meet the objectives of this research, the machine load of the injector, the scheduled and unscheduled stops to obtain availability were observed. Subsequently, the cycle time in parts per hour and the quantity of parts produced were measured, which together with data measured in the availability index obtained the efficiency index. After that, with the quantity of parts produced and defective parts, the quality index was calculated. From these indexes, the OEE was determined. Finally, with the OEE defined, a critical analysis of the process in question could be made and it was concluded that the OEE method exposed the losses and waste in the process. The proposal for improvement is the implementation of the model by professional people, perform a dense cause analysis through partnerships between sectors and study the possibility of a Total Productive Maintenance (TPM) program, which would increase the reliability of the production, management process and the business as a whole